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<p class="Decl"><b>procedure</b> Invalidate; <b>override</b>;</p>
<h2>Description</h2>
<p class="Body"><span class="EmptyRef">Invalidate</span> is overriden from <span class="API">TWinControl</span>. 
  In addition to standard behavior, it also invalidates the buffer content, so 
  that the buffer gets actually updated during the following paint procedure.</p>
<p class="Body"> You do not have to call this method explicitly in your application.</p>
<p id="hidden">[See also]: </p>
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